Just in case anyone's interested in an apples to oranges to pomegranates comparison, below are my numbers from when I painted my RV7 wings. I failed to weigh the ailerons, flaps and wingtips prior to paint, but there should be minimal weight gain since the entire wing only gained less than 3 lbs. This wing is obviously cantilever, and is rated for 1800 lbs gross in Utility Category (1600 lbs in 6G acro category).
?
Not intended to be a better/worse kind of post; I just always find it interesting to compare design techniques/choices for various missions. I'd love to see numbers for a 'strutted' wood wing rated at the same GW/category/stall speed.
?
Charlie
?
?
Weighed a painted vs unpainted wing ~115" long by ~100" circumference (~79.9 sq feet):
unpainted, with only the large pushrod installed and no flaps or aileron:
73.6 pounds
Fully painted wing; same conditions:
76.53 lbs
So... 46.88 oz over 73.6 sq ft = .6739 oz per sq ft for primer & paint.
Primer was single coat (Summit recommends 1-2 medium wet coats).
Finish was two relatively thin coats (Summit recommends 2-3 medium wet coats)?
Wingtips, flaps, & ailerons will add 20-25 sq feet of paint.
tip: ~6.5 lbs painted
flap ~5.8 lbs painted
Aileron: ~9.5 lbs painted
